MAX232DWG4

Overview

The MAX232DWG4 is a dual transmitter and receiver integrated circuit designed for RS-232 communication applications. Manufactured by Texas Instruments, this component operates within a supply voltage range of 4.5 V to 5.5 V, with a typical operating voltage of 5 V. It features two drivers and two receivers, supporting full-duplex data transmission at speeds up to 250 kb/s. The device utilizes an internal charge pump to generate the necessary positive and negative voltages from a single power source. It is housed in a 16-pin SOIC package and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual transmitters and receivers for complete RS-232 signal conversion
• Utilizes internal charge pump circuitry to eliminate external high-voltage capacitors
• Provides ESD protection rated at 15 kV for enhanced signal integrity

Applications

• Industrial serial communication interfaces
• Modem connections and peripheral interfacing
• Embedded systems requiring RS-232 connectivity

Procurement Notes

Verify the specific suffix 'DWG4' to confirm the SOIC-16 package type and lead-free RoHS compliance status. Ensure the ordering information matches the exact manufacturer part number to avoid confusion with similar variants in the MAX232 family that may differ in temperature rating or packaging format.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with surface-mount assembly constraints. It is suitable for designs needing robust ESD protection and operation within standard industrial temperature limits. Confirm that the system power supply remains stable between 4.5 V and 5.5 V to ensure proper charge pump functionality and signal levels.

Part Context

This part belongs to the MAX232E series of RS-232 transceivers from Texas Instruments. It shares functional similarities with other members like the MAX232IDR but differs in package style and specific manufacturing revisions. The 'G4' suffix typically indicates lead-free and RoHS-compliant construction, distinguishing it from older non-compliant versions.

Replacement Considerations

Compatible substitutes include the MAX232IDR and MAX232DRG4. Verify pin compatibility and electrical specifications before substitution, as package variations may affect board layout requirements.